Finding the Fourth Proportional to 2,407.10, 3,610.89 and 867.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,407.10 : 3,610.89 = 867.74 : x
2. Step 2: Convert to fraction form
   2,407.10/3,610.89 = 867.74/x
3. Step 3: Cross multiply
   2,407.10x = 3,610.89 × 867.74
4. Step 4: Simplify right side
   2,407.10x = 3,133,313.69
5. Step 5: Solve for x
   x = 3,133,313.69/2,407.10
6. Step 6: Final answer
   x = 1,301.70